NIC Handle
A NIC handle (Network Information Centre handle) is a unique alphanumeric character sequence that represents an entry in the databases maintained by Network Information Centres. When a new domain name is registered with a domain name registrar, a NIC handle is assigned by the registrar to the particular set of information associated with that domain name (such as who registered it and a contact e-mail address). Once a domain name has been registered, its NIC handle can be used to search for that record in the database. The NIC handle was developed in 1982 by Ken Harrenstien and Vic White working at the early Network Information Center at SRI International. NIC handle system in limited modern use The NIC Handle system is no longer commonly used by domain name registries. It was previously possible to query WHOIS by NIC handle, and see all the domains registered by that NIC handle, but this service was discontinued (presumably due to spam Spam may refer to: * Spam (food), a can ...
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Alphanumeric
Alphanumericals or alphanumeric characters are a combination of alphabetical and numerical characters. More specifically, they are the collection of Latin letters and Arabic digits. An alphanumeric code is an identifier made of alphanumeric characters. Merriam-Webster suggests that the term "alphanumeric" may often additionally refer to other symbols, such as punctuation and mathematical symbols. In the POSIX/C locale, there are either 36 (A–Z and 0–9, case insensitive) or 62 (A–Z, a–z and 0–9, case-sensitive) alphanumeric characters. Subsets of alphanumeric used in human interfaces When a string of mixed alphabets and numerals is presented for human interpretation, ambiguities arise. The most obvious is the similarity of the letters I, O and Q to the numbers 1 and 0. Therefore, depending on the application, various subsets of the alphanumeric were adopted to avoid misinterpretation by humans. In passenger aircraft, aircraft seat maps and seats were designated by ...
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